I respectfully request that your offices provide me with competent evidence that I have any legal obligation to pay you. 1. In the sample letter, fill in your personal information.Below are sample letters you might write an auto repair shop for doing a shoddy repair job and a contractor who botched a remodeling contract. Include your name, address, and contact information at the top. If you disagree with an individual or a company, and informal efforts to resolve your dispute fail, you should write a demand letter. Sample Letter of Credit in MS Word format. How to use this sample letter: 1. Read the background below. 2. A letter of explanation can clarify your financial situation and get you one step closer to qualifying for a mortgage. As full payment and satisfaction of the Present Debt.